removing Siebel web Server logs

Siebel

Problem Summary deleting old logs

Problem Description---------------------------------------------------

I have tried power shell scripts and FORFILES Batch files. I can't seem to delete these old logs automatically.

we can delete the files manually on this windows webserver. any ideas why a windows admin can delete logs

D:\Siebel\ses\applicationcontainer>forfiles /p "D:\Siebel\ses\applicationcontainer\logs" /s /d -40 /c "cmd /c del @file"

D:\Siebel\ses\applicationcontainer\logs\DAV.log

Access is denied.

D:\Siebel\ses\applicationcontainer\logs\migration.log

Access is denied.

D:\Siebel\ses\applicationcontainer\logs\migrationdeployment.log

Access is denied.

D:\Siebel\ses\applicationcontainer\logs\PerfLogger.log